I planted my tank about one week ago. I have Co2 going via a Nutra-system set-up. I have developed some green stringy algae, but added some extra Excel and it seems to be going away. I think I made the mistake of adding ferts too soon. It is a mix that contains, boron, magnesium sulfate, potasium nitrate, potasium sulfate and other trace elements. I added less than a 1/4 capful almost everyday up until the algae started to develope. My plants do look pretty healthy. My question is, is it normal for roots to be growing out of my stem plants? I don't mean at the bottom of the plant! I mean from the sides of the stem like under the leaves. Also, I'm going to wait to add any more ferts for a few days. Am going to do a water change tonight too. My other question is , does this fertilizer sound ok? Thank you for any help!